Self-cleaning UV reflective coating

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – With means applying electromagnetic wave energy or...

Reexamination Certificate

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C422S121000

Reexamination Certificate

active

09961632

ABSTRACT:
A photo-catalytic overcoat on a UV reflective paint layer is employed to maintain high reflectance for long periods of time by continuously removing organic films when exposed to UV light. Advantageously, nano-particles comprising the photo-catalytic overcoat are composed of a semiconductor material that lead to the production of oxygen and hydroxyl free radicals when illuminated with UV light in the presence of water vapor. Some of these free radicals oxidize organic surface films, converting the surface films into gaseous H2O and CO2. This reduces the amount of organic deposits on the surface of the reflective paint layer.

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Fujishima, A., “TiO2Photocatalysis: New Concepts And Environmental Applications” presented at the 8th International Fischer Symposium on Electrochemistry and Environment, Jun. 18-22, 2000. Universität Karlsruhe (TII), Germany, 4 pages.
Fujishima, A., “TiO2Photocatlysis Fundamental and Applications”, BKC, Inc. May 1999.

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